Internat ional Day of Yoga commonly referred to as Yoga Day, is celebrat ed annually on 21 June since its inceptio n in 2015.An internat ional day for yoga was declared unanimou sly by the United Nations General Assembly (UNGA) on 11 December 2014. Yoga is a physical , mental and spiritua l practice attribut ed mostly to India. The Indian Prime Minister Narendra Modi in his UN address suggeste d the date of 21 June, as it is the longest day of the year in the Northern Hemisphe re and shares special signific ance in many parts of the world. The theme for the 2018 celebrat ion, organize d by the Permanen t Mission of India to the United Nations, is 'Yoga for Health.' The theme highligh ts the fact that yoga can contribu te in a holistic way to achievin g an equilibr ium between mind and body.